End closure for range boilers and like containers



W. M. BELL.

END CLOSURE FOR RANGE BOILERS AND LIKE CONTAINERS.

' APPLICATION flLED APR. 21. 1920.

EASQQO Patented Sept. 26, 19-212,

tion.

' Patented ept. 2d, 1122.

OFFICE.

WILLIAM BELL, OF IORTSMOUTH, OHIO, ASSIGNOR TO WHITAKER-GLESSNER Y, OF WHEELING, WEST VIRGINIA, A CORPORATION OF WEST VIRGINIA.

END CLOSURE FbR RANGE BOILERS AND LIKE CONTAINERS.

Application filed April 21, 1920. Serial No. 375,601.

To all whom it may concern:

citizen of the United States of America, and resident of Portsmouth, county of Scioto, and State of Ohio, have invented certain new and useful Improvements in End Closures for Range Boilers and like Containers, of which the following is a specifica- This invention relates broadly to sheetmetal containers or tanks which are subjected to internal pressure strains, and more particularly to an end closure for such containers.

The primary object of the invention is to provide a structurally improved form of end closure for pressure tanks, boilers, and the like, as, for instance, the usual types of domestic range boilers.

A further object is to provide an end structure designed particularly as a bottom for range boilers and similar containers, which possesses the requisite strength and durability, which requires a minimum of material in its formation, which provides for ready drainage without the collection of sediment, which admits of the easy application and removal of sputs as occasion may require, and which consumes a minimum quantity of spelter 'or other coating material. I

' With these and other objects in view, the

invention resides in the features of construction which will hereinafter be fully described, reference being had to the accompanying drawings, in which- Figure 1 is a plan view of an end closure constructed in accordance invention, and- Figure 2 is a section .on line 22, Fig.

I 1, showing the closure employed as a bottom for a tank or container of range-boiler type. The closure is formedof a single piece of sheet metal pressed to form a body 1 which, at

enerally considered, is of concavo-convex orm and whlch has a central clrcular 0 ening 2 for the. reception of'a sput 3. m

ploiyed as a bottom closure for a cylindrical boi er body 4:, asshown in Fig. 2, the con cave surface of the body 1 is uppermost.

Said body has an integral peripheral flange 5 extending downward vertically therefrom and adapted to fitsnugly within the lower with the present "radially disposed ribs 9 which are employed endof the boiler body 4 and to be r g y attached to the latter by suitable means,as by the usual rivets or by welding.

The body 1 is inclined from its peripheral portion inward throughout the major part of the length of its radius on a regular.

gradient of appropriate degree, as approximately fifteen degrees, thence inclines sharply, as at an angle of approximately forty-five degrees, throughout a distance,

measured vertically, substantially equal to.

the thickness of the head portion? of the sput 3, and thence extends horizontally to the edge of the opening 2 to form a flat ledge the width of the flange which constitutes. I

the head 3 of the sput 3, so that said head more or less closely abuts the lower portion of said shoulden Thus there is formed intermediate said shoulder 7 and the periphery of the head 3 a substantially triangular groove or channel-of such slight dimensions that the spelter or other'material employed in coating the structure following assemblage of the parts finds lodgment therein and fills the same to, or approximately to, the level .of said head, as shown at 8 in Fig. 2. An effective seal s thus formed about the sput 3 with the use the same time the formatiofi of an open channel in which sediment could collect is effectually eliminated. I

Formed in the body 1 1s a plurality of for reinforcing the bottom to enable it to withstand excessive pressure strains to which it is liable to be subjected when employed in a boiler or the like. Said I'lbS,

which are formed by the press in the sameoperation in which the bottom is pressed into the irregular concavo-convex form hereinbefore described, are of inwardly ta-. pering form and of substantiallyuniform height throughout the major part of the length thereof, but have their outer ends disappearing, or fading 9, in, the horizontal p ane of the highest level of bottom structure, and have their out, as shown "at.

i to

inner ends terminating at or adjacent to the top of the inclined shoulder 7.

While the closure is herein shown and described as a bottom for containers, it is obvious that it may be employed also as a top end closure.

What ll claim is- 1 1. An end closure for range boilers and like containers, consisting of a sheet-meta] plate of concave-convex form disposed with its concave face inward and havlng an outwardly extending peripheral fiarfge adapted to-fit within and to be rigidly attached to the boiler body, said plate having therein a centrally located sput-receiving opening and having formed about said opening a horizontal circular ledge adapted for having the head of a sput,seat thereon, said ledge being depressed below the plane of the concave face a distance approximating the thickness of the head ofthe sput, said plate having I formed therein aplurality of radial rein- A forcing ribs which terminate at their inner ends at points located outward with respect to the depression whereby said ledge is formed. i 2. An end closure for range boilers and like containers, consisting of a sheet-metal plate of conca-vo-convex form disposed with its concave face inward and having an outwardly extending peripheral. flange adapted to fit within and to be rigidlyattached to the .boiler body, said plate having therein a central opening and having formed about said opening a horizontal circular ledge, a sput mounted in said opening with its head seated upon said ledge, said ledge being depressed to a plane located below-the adjacent portion of the concave face and being joined to the latter by a sharply inclined shoulder having a height approximating the thickness of said sput-head, said shoulder and the peripher of said sput-head being separated by a c annel which is of such narrow width that it is adapted to be closed by the material employed in coating the boiler, and said plate having formed therein a plurality of radial reinforcing ribs which have 1 their inner ends terminated adjacent to said shoulder. 3. An end closure for range boilersjand --like containers, consisting of a sheet-metal plate of concavo-convex'form disposed with its concave face inward and having an outwardly extending peripheral flange adapted to fit within and to be rigidly attached to the boiler body, said plate having therein a centrally located sput-receiving opening and having formed about said'o'penlnga'horh so zontal ledge outwardly-depressed to occupy a lower .level and adapted for having the head of a sput seat thereon.

4; An end closure for-range boilers, consistlng of a sheet-metal plate of concavocon ex orm disposed with-its concav face neso oo inward and having an outwardly extending peripheral flange adapted to fit within and to be rigidly attached to the boiler body, said plate having therein a centrally located sput-receiving opening and having formed about said opening a horizontal circular ledge adapted for having the head of a sput seat thereon, said ledge being encircled by a shoulder having a relatively sharp inclination.

5. An end closure for range boilers and the like, consisting of a sheet-metal plate of. concavo-convex form adapted for mounting within an end of a boiler body, with its concave face inward, said plate having therein a centrally located sput-receiving opening and having formed about said opening a depressed horizontal ledge adapted for having the head of a sput seat thereon, said ledge being located below the plane of the concave face a distance approximating the thickness of the head of the sput so that the face of said head lies approximately in said plane.

6. An end closure for range boilers, consisting of a sheet-metal plate of concavoconvexform adapted for mounting within the end of a boiler body with its concave face inward, said plate havingtherein a centrally located sput-receiving opening and having formed about said opening a horizontal ledge adapted for having the head of a sput seat thereon, said ledge being depressed below the plane of the concave face a distance approximating the thickness of the head of the sput so that the face of said head lies approximately in said plane, said ledge being closely encircled by a sharply inclined shoulder, anda filling for the space intermediate said head and said shoulder.

7. A bottom for range boilers comprisin a sheet-metal plate adapted to be mounte within the lower end of a boiler body, the body of said plate being provided with a central opening and being dished downward toward said opening to form a regularly in- 'clined drainage surface, the portion of said body adjacent to said opening being depressed downward to form a horizontal opening-encircling ledge, and a sput disposed in said opening with its head seated upon said ledge, the head of said sput'having its top surface substantially flush with the lower end portion of said drainage surface.

8. A bottom for range boilers comprising a sheet-metal plate adapted for mounting closely within the lower end of a boiler body,

the body of said plate being provided with -a-central opening and being dished downward toward said opening to form a re -larly inclined drainage surface, the portion of said body adjacent to said opening being depressed to form a horizontal opening-en circling edge, a sput disposed in said openingwith fts head seated upon said ledge, the at peripheral portion of the sput-head being In testimony whereofil affix my signature separated from' the adjacent portion of the in presence of two subscribing witnesses. plate body by a narrow channel adapted to be closed by the spelter employed in coating WILLIAM BELL" 5 the boiler, the top face of said sput-head be- Witnesses:

ing substantially flush with the lower end- E. A. EYN N,

portion of said drainage surface. CLARA 

